Improvement in water filters and coolers



UNITED STATES PATENT OFFICE.

Louis SOHARFF, or sPRING MI LL, PENNSYLVANIA.

IMPROVEMENT IN WATER FILTERS AND COOLERS. I

Specification forming part of Letters Patent No. 127,926, dated J one 11, 1872.

Specification describing an Improved Water Filter and Cooler, invented by LOUIS SCHARFF, of Spring Mill, Montgomery county, Pennsylvania.

Improved Water Filter and Cooler.

My invention consists of improvements fully described hereinafter, in the water filter and cooler for which Letters Patent No. 51,485 were granted to me on the 12th day of December, 1865, the said improvements having been designed mainly with the view of simplifying and reducing the cost of the apparatus, and of strengthening it, so as to prevent ends of the cylinder A, and the joints are suitably packed to prevent leakage, and the said heads are secured together and held against the ends of the cylinder by a rod or bolt, F, passing entirely through thelatter, and through holes in the center of the heads, outside of which it is provided with tightening-nuts 12]). The interior of the apparatus is separated into three chambers, G, H, and I, by two perforated partitions, J and J, of earthenware or other material, the former of which rests upon an internal shoulder, d, of the lower head B, and the latter upon a ledge, 0, formed within the cylindrical body A of the apparatus. The lower or sediment-chamber G, is formed entirely within the semi-spherical lower head B, beneath the perforated partition J, and at one side of the head close to the top of the said chamber is formed a hollow branch, f, into which is screwed an inlet-pipe, g, while with the bottom of the chamber communicates a passage, it, formed in an enlargement of the head, and extending upward around the latter to the top of the same, where it terminates in a blow-01f cock, '5. The central or waterchamber H is of greater capacity than either of the other chambers, and is situated between the two perforated partitions J and J, and

the uppermost chamber I, above the latter partition, is filled or nearly filled with a mixture of sand and charcoal, or other filtering medium, to which access can be obtained through a hand-hole, k, in the upper cap B, the latter being also provided with an outletpipe, m.

If the apparatus is to be used as a watercooler, as well as a filter, it may be arranged within an ice-box, or may be buried beneath the surface of the ground, and it may also, if desired, be combined with a receiving vessel, communicating with the upper chamber 1 through the pipe m, as described in my aforesaid patent of December 12, 1865 but I propose in most cases to make the apparatus of sufiicient capacity to enable the second vessel or reservoir to be dispensed with.

In using the apparatus the blow-off cock 1' is closed, and water under pressure is admit ted into the chamber G through the inlet-pipe g and branch f. This water, after filling the chamber G, will rise through the perforated partition J into the chamber H, and, after fillin g the latter, will pass through the perforated partition J, and through the filtering medium in the chamber I, and may be drawn ofi' finally through the outlet-pipe m. The coarser impurities will be separated from the water by the perforated partitions J and J, and will be deposited in the form of sediment upon the bottom of the chamber G, and the finer impurities will be entirely separated by the filtering medium in the upper chamber, so that perfectly clear water can be drawn from the latter.

The apparatus can be cleansed at any time by closing the cock in the outlet-pipe m, opening the cock t, and forcing the water and sediment from the chamber Gthrough the passage h and blow-off cook.

The principal objection to my former filter and cooler, was its liability to fracture, or to leak at the joints, owing to the internal pressure of the water, which in some localities is excessive; but these objections-I have entirely overcome by the system of bracing adopted in the present apparatus.

I claim as my invention- In testimony whereof I have signed my name 1. The dished or semi-spherical head B of to this specification in the presence of two subthe apparatus cast with passages f and h, eomscribing witnesses. municating with an inlet-pipe and blow-off LOUIS SCHARFF. cock, as described.

2. The combination of the head B and its Witnesses: flange a and internal shoulder d, with the WM. A. STEEL, body A of the apparatus, and perforated par- JOHN K. RUPERTUs.

tition J. 

